What is networking and why worry about it?
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* People (and their computers) sharing information with each other. 
* Impact: The Internet, the Web, search, email, Facebook, Bitcoin, your new app
* Intellectual interest: connections to operating systems, algorithms, programming languages, hardware design, electrical engineering, physics

Overall course structure
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* Mostly structured around classical and new research in networking.
* Some flexibility in the schedule. If there are topics you find interesting, email me.
* Topics we'll be discussing in order of the lectures:
--> Internet architecture (today): The big picture of networking.
--> Resource allocation: Allocating scarce resources (e.g., network capacity) across competing entities
--> Resource allocation with network support
--> Internet routing: getting packets from one point to another
--> Internet exchanges and peering (the equivalent of large telephone exchanges)
--> Datacenters: Private networks powering today's web services
--> Software defined networking: Making the network more flexible.
--> Programmable routers: Making it even more flexible.
--> Network security: Guaranteeing confidentiality, integrity, authenticity. SSL/TLS, Heartbleed
--> Network censorship: The great firewall, the great cannon.
--> Cellular networks: understanding LTE, (potentially) recent developments like 5G
--> Wireless networks: using multiple antennas, full duplex radios
* Will be more unstructured than an undergrad class, but also more interactive.

Today's content
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* Two papers: Design Philosophy and Only Just Works
* Both papers deal with Internet Architecture
* What is Internet Architecture?
* I call it the big picture of the Internet: what goes where (network vs. end host) without worrying about exactly how it is implemented.
* Important to at least roughly get the big picture,
* otherwise, the details will seem uninteresting or boring
* These papers are on the harder side because they are more philosophical and less technical.
* So stop me if you have questions.